3903218

Information

• Patent Grant
• 3903218

• References
• Source

• Patent Number

  3,903,218

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1975
  49 years ago

• CPC

  • G02B13/08 - Anamorphotic objectives
  • B29D11/00019 - with non-spherical faces
  • B29D11/00855 - Producing cylindrical lenses
  • G02B3/0081 - having one or more elements with analytic function to create variable power
  • G02B3/04 - with continuous faces that are rotationally symmetrical but deviate from a true sphere
  • Y10S425/808 - Lens mold

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 076 - Metal tools and implements, making
  • 425 - Plastic article or earthenware shaping or treating: apparatus